./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 13:56:03,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:56:03,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:56:03,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:56:03,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:56:03,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:56:03,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:56:03,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:56:03,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:56:03,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:56:03,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:56:03,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:56:03,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:56:03,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:56:03,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:56:03,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:56:03,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:56:03,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:56:03,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:56:03,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:56:03,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:56:03,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:56:03,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:56:03,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:56:03,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:56:03,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:56:03,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:56:03,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:56:03,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:56:03,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:56:03,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:56:03,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:56:03,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:56:03,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:56:03,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:56:03,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:56:03,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:56:03,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:56:03,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:56:03,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:56:03,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:56:03,709 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-21 13:56:03,734 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:56:03,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:56:03,735 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:56:03,735 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:56:03,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:56:03,737 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:56:03,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:56:03,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:56:03,739 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:56:03,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:56:03,740 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:56:03,741 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 13:56:03,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:56:03,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:56:03,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:56:03,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:56:03,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:56:03,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:56:03,743 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-21 13:56:03,743 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:56:03,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:56:03,743 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:56:03,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:56:03,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:56:03,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:56:03,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:56:03,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:56:03,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:56:03,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:56:03,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:56:03,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:56:03,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:56:03,748 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:56:03,748 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:56:03,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:56:03,748 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 [2022-11-21 13:56:04,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:56:04,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:56:04,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:56:04,089 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:56:04,090 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:56:04,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2022-11-21 13:56:07,266 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:56:07,642 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:56:07,646 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2022-11-21 13:56:07,664 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a/data/7ca9dadb7/dccb766d9a8c446cb7a2f18699cbf96b/FLAG31721843e [2022-11-21 13:56:07,686 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a/data/7ca9dadb7/dccb766d9a8c446cb7a2f18699cbf96b [2022-11-21 13:56:07,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:56:07,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:56:07,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:56:07,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:56:07,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:56:07,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:56:07" (1/1) ... [2022-11-21 13:56:07,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e1f8c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:07, skipping insertion in model container [2022-11-21 13:56:07,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:56:07" (1/1) ... [2022-11-21 13:56:07,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:56:07,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:56:08,183 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i[30176,30189] [2022-11-21 13:56:08,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:56:08,261 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:56:08,329 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i[30176,30189] [2022-11-21 13:56:08,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:56:08,413 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:56:08,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:08 WrapperNode [2022-11-21 13:56:08,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:56:08,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:56:08,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:56:08,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:56:08,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:08" (1/1) ... [2022-11-21 13:56:08,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:08" (1/1) ... [2022-11-21 13:56:08,519 INFO L138 Inliner]: procedures = 172, calls = 52, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 286 [2022-11-21 13:56:08,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:56:08,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:56:08,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:56:08,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:56:08,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:08" (1/1) ... [2022-11-21 13:56:08,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:08" (1/1) ... [2022-11-21 13:56:08,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:08" (1/1) ... [2022-11-21 13:56:08,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:08" (1/1) ... [2022-11-21 13:56:08,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:08" (1/1) ... [2022-11-21 13:56:08,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:08" (1/1) ... [2022-11-21 13:56:08,569 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:08" (1/1) ... [2022-11-21 13:56:08,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:08" (1/1) ... [2022-11-21 13:56:08,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:56:08,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:56:08,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:56:08,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:56:08,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:08" (1/1) ... [2022-11-21 13:56:08,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:56:08,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:56:08,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:56:08,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:56:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 13:56:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-21 13:56:08,677 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-21 13:56:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 13:56:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 13:56:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:56:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:56:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-21 13:56:08,679 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-21 13:56:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:56:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:56:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:56:08,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:56:08,681 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 13:56:08,833 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:56:08,836 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:56:09,463 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:56:09,479 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:56:09,479 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-11-21 13:56:09,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:56:09 BoogieIcfgContainer [2022-11-21 13:56:09,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:56:09,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:56:09,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:56:09,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:56:09,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:56:07" (1/3) ... [2022-11-21 13:56:09,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b854d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:56:09, skipping insertion in model container [2022-11-21 13:56:09,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:08" (2/3) ... [2022-11-21 13:56:09,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b854d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:56:09, skipping insertion in model container [2022-11-21 13:56:09,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:56:09" (3/3) ... [2022-11-21 13:56:09,491 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i [2022-11-21 13:56:09,501 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 13:56:09,551 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:56:09,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-21 13:56:09,552 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 13:56:09,701 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-21 13:56:09,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 305 transitions, 632 flow [2022-11-21 13:56:10,045 INFO L130 PetriNetUnfolder]: 58/545 cut-off events. [2022-11-21 13:56:10,046 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-21 13:56:10,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 545 events. 58/545 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2803 event pairs, 0 based on Foata normal form. 0/458 useless extension candidates. Maximal degree in co-relation 301. Up to 8 conditions per place. [2022-11-21 13:56:10,067 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 305 transitions, 632 flow [2022-11-21 13:56:10,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 278 places, 305 transitions, 632 flow [2022-11-21 13:56:10,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:56:10,117 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e41f818, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:56:10,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-21 13:56:10,136 INFO L130 PetriNetUnfolder]: 5/96 cut-off events. [2022-11-21 13:56:10,136 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 13:56:10,137 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:56:10,137 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:10,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-21 13:56:10,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:10,146 INFO L85 PathProgramCache]: Analyzing trace with hash -338928931, now seen corresponding path program 1 times [2022-11-21 13:56:10,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:10,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434130534] [2022-11-21 13:56:10,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:10,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:10,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:10,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434130534] [2022-11-21 13:56:10,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434130534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:10,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:10,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:56:10,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097083909] [2022-11-21 13:56:10,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:10,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:56:10,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:10,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:56:10,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:56:10,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 305 [2022-11-21 13:56:10,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 305 transitions, 632 flow. Second operand has 2 states, 2 states have (on average 272.0) internal successors, (544), 2 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:10,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:56:10,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 305 [2022-11-21 13:56:10,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:56:10,718 INFO L130 PetriNetUnfolder]: 11/495 cut-off events. [2022-11-21 13:56:10,718 INFO L131 PetriNetUnfolder]: For 39/53 co-relation queries the response was YES. [2022-11-21 13:56:10,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 495 events. 11/495 cut-off events. For 39/53 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2390 event pairs, 0 based on Foata normal form. 91/541 useless extension candidates. Maximal degree in co-relation 273. Up to 12 conditions per place. [2022-11-21 13:56:10,727 INFO L137 encePairwiseOnDemand]: 279/305 looper letters, 6 selfloop transitions, 0 changer transitions 0/277 dead transitions. [2022-11-21 13:56:10,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 277 transitions, 588 flow [2022-11-21 13:56:10,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:56:10,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 13:56:10,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 574 transitions. [2022-11-21 13:56:10,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.940983606557377 [2022-11-21 13:56:10,746 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 574 transitions. [2022-11-21 13:56:10,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 574 transitions. [2022-11-21 13:56:10,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:56:10,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 574 transitions. [2022-11-21 13:56:10,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 287.0) internal successors, (574), 2 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:10,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:10,770 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:10,772 INFO L175 Difference]: Start difference. First operand has 278 places, 305 transitions, 632 flow. Second operand 2 states and 574 transitions. [2022-11-21 13:56:10,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 277 transitions, 588 flow [2022-11-21 13:56:10,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 277 transitions, 588 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 13:56:10,784 INFO L231 Difference]: Finished difference. Result has 277 places, 277 transitions, 576 flow [2022-11-21 13:56:10,786 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=576, PETRI_PLACES=277, PETRI_TRANSITIONS=277} [2022-11-21 13:56:10,790 INFO L288 CegarLoopForPetriNet]: 278 programPoint places, -1 predicate places. [2022-11-21 13:56:10,790 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 277 transitions, 576 flow [2022-11-21 13:56:10,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 272.0) internal successors, (544), 2 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:10,791 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:56:10,791 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:10,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:56:10,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-21 13:56:10,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:10,793 INFO L85 PathProgramCache]: Analyzing trace with hash -2017300675, now seen corresponding path program 1 times [2022-11-21 13:56:10,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:10,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508802637] [2022-11-21 13:56:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:10,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:11,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:11,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:11,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508802637] [2022-11-21 13:56:11,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508802637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:11,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:11,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:56:11,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518953299] [2022-11-21 13:56:11,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:11,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:56:11,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:11,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:56:11,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:56:11,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 305 [2022-11-21 13:56:11,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 277 transitions, 576 flow. Second operand has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:11,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:56:11,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 305 [2022-11-21 13:56:11,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:56:11,191 INFO L130 PetriNetUnfolder]: 8/388 cut-off events. [2022-11-21 13:56:11,191 INFO L131 PetriNetUnfolder]: For 41/83 co-relation queries the response was YES. [2022-11-21 13:56:11,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 388 events. 8/388 cut-off events. For 41/83 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1445 event pairs, 0 based on Foata normal form. 2/355 useless extension candidates. Maximal degree in co-relation 421. Up to 15 conditions per place. [2022-11-21 13:56:11,198 INFO L137 encePairwiseOnDemand]: 302/305 looper letters, 13 selfloop transitions, 2 changer transitions 0/279 dead transitions. [2022-11-21 13:56:11,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 279 transitions, 610 flow [2022-11-21 13:56:11,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:56:11,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 13:56:11,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 808 transitions. [2022-11-21 13:56:11,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8830601092896175 [2022-11-21 13:56:11,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 808 transitions. [2022-11-21 13:56:11,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 808 transitions. [2022-11-21 13:56:11,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:56:11,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 808 transitions. [2022-11-21 13:56:11,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:11,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:11,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:11,212 INFO L175 Difference]: Start difference. First operand has 277 places, 277 transitions, 576 flow. Second operand 3 states and 808 transitions. [2022-11-21 13:56:11,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 279 transitions, 610 flow [2022-11-21 13:56:11,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 279 transitions, 610 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 13:56:11,221 INFO L231 Difference]: Finished difference. Result has 280 places, 277 transitions, 584 flow [2022-11-21 13:56:11,222 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=584, PETRI_PLACES=280, PETRI_TRANSITIONS=277} [2022-11-21 13:56:11,222 INFO L288 CegarLoopForPetriNet]: 278 programPoint places, 2 predicate places. [2022-11-21 13:56:11,223 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 277 transitions, 584 flow [2022-11-21 13:56:11,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:11,224 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:56:11,225 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:11,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:56:11,226 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-21 13:56:11,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:11,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1805954810, now seen corresponding path program 1 times [2022-11-21 13:56:11,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:11,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858479875] [2022-11-21 13:56:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:11,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:56:11,289 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:56:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:56:11,372 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:56:11,373 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 13:56:11,374 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2022-11-21 13:56:11,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2022-11-21 13:56:11,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2022-11-21 13:56:11,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2022-11-21 13:56:11,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2022-11-21 13:56:11,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2022-11-21 13:56:11,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2022-11-21 13:56:11,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2022-11-21 13:56:11,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 24 remaining) [2022-11-21 13:56:11,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2022-11-21 13:56:11,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2022-11-21 13:56:11,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2022-11-21 13:56:11,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2022-11-21 13:56:11,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2022-11-21 13:56:11,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2022-11-21 13:56:11,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2022-11-21 13:56:11,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2022-11-21 13:56:11,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2022-11-21 13:56:11,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2022-11-21 13:56:11,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2022-11-21 13:56:11,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2022-11-21 13:56:11,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2022-11-21 13:56:11,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2022-11-21 13:56:11,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2022-11-21 13:56:11,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 13:56:11,394 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-21 13:56:11,399 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 13:56:11,400 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-21 13:56:11,552 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-21 13:56:11,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 454 places, 505 transitions, 1058 flow [2022-11-21 13:56:12,383 INFO L130 PetriNetUnfolder]: 197/1604 cut-off events. [2022-11-21 13:56:12,384 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-21 13:56:12,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1701 conditions, 1604 events. 197/1604 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 11431 event pairs, 1 based on Foata normal form. 0/1348 useless extension candidates. Maximal degree in co-relation 968. Up to 32 conditions per place. [2022-11-21 13:56:12,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 454 places, 505 transitions, 1058 flow [2022-11-21 13:56:12,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 454 places, 505 transitions, 1058 flow [2022-11-21 13:56:12,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:56:12,484 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e41f818, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:56:12,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-11-21 13:56:12,496 INFO L130 PetriNetUnfolder]: 5/99 cut-off events. [2022-11-21 13:56:12,497 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 13:56:12,497 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:56:12,497 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:12,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-11-21 13:56:12,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:12,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1012241900, now seen corresponding path program 1 times [2022-11-21 13:56:12,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:12,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329592018] [2022-11-21 13:56:12,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:12,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:12,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:12,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:12,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329592018] [2022-11-21 13:56:12,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329592018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:12,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:12,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:56:12,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622462268] [2022-11-21 13:56:12,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:12,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:56:12,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:12,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:56:12,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:56:12,551 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 441 out of 505 [2022-11-21 13:56:12,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 505 transitions, 1058 flow. Second operand has 2 states, 2 states have (on average 442.0) internal successors, (884), 2 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:12,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:56:12,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 441 of 505 [2022-11-21 13:56:12,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:56:13,400 INFO L130 PetriNetUnfolder]: 65/1464 cut-off events. [2022-11-21 13:56:13,400 INFO L131 PetriNetUnfolder]: For 234/340 co-relation queries the response was YES. [2022-11-21 13:56:13,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1634 conditions, 1464 events. 65/1464 cut-off events. For 234/340 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 10473 event pairs, 1 based on Foata normal form. 740/2060 useless extension candidates. Maximal degree in co-relation 916. Up to 73 conditions per place. [2022-11-21 13:56:13,469 INFO L137 encePairwiseOnDemand]: 457/505 looper letters, 12 selfloop transitions, 0 changer transitions 0/453 dead transitions. [2022-11-21 13:56:13,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 453 transitions, 978 flow [2022-11-21 13:56:13,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:56:13,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 13:56:13,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 942 transitions. [2022-11-21 13:56:13,473 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9326732673267327 [2022-11-21 13:56:13,473 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 942 transitions. [2022-11-21 13:56:13,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 942 transitions. [2022-11-21 13:56:13,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:56:13,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 942 transitions. [2022-11-21 13:56:13,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 471.0) internal successors, (942), 2 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:13,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 505.0) internal successors, (1515), 3 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:13,483 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 505.0) internal successors, (1515), 3 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:13,483 INFO L175 Difference]: Start difference. First operand has 454 places, 505 transitions, 1058 flow. Second operand 2 states and 942 transitions. [2022-11-21 13:56:13,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 453 transitions, 978 flow [2022-11-21 13:56:13,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 453 transitions, 978 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 13:56:13,496 INFO L231 Difference]: Finished difference. Result has 451 places, 453 transitions, 954 flow [2022-11-21 13:56:13,497 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=954, PETRI_PLACES=451, PETRI_TRANSITIONS=453} [2022-11-21 13:56:13,501 INFO L288 CegarLoopForPetriNet]: 454 programPoint places, -3 predicate places. [2022-11-21 13:56:13,502 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 453 transitions, 954 flow [2022-11-21 13:56:13,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 442.0) internal successors, (884), 2 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:13,504 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:56:13,504 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:13,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 13:56:13,505 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-11-21 13:56:13,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:13,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1604353652, now seen corresponding path program 1 times [2022-11-21 13:56:13,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:13,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530481442] [2022-11-21 13:56:13,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:13,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:13,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:13,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:13,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530481442] [2022-11-21 13:56:13,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530481442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:13,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:13,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:56:13,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059147321] [2022-11-21 13:56:13,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:13,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:56:13,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:13,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:56:13,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:56:13,684 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 505 [2022-11-21 13:56:13,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 453 transitions, 954 flow. Second operand has 3 states, 3 states have (on average 435.0) internal successors, (1305), 3 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:13,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:56:13,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 505 [2022-11-21 13:56:13,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:56:14,492 INFO L130 PetriNetUnfolder]: 60/1260 cut-off events. [2022-11-21 13:56:14,493 INFO L131 PetriNetUnfolder]: For 233/430 co-relation queries the response was YES. [2022-11-21 13:56:14,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 1260 events. 60/1260 cut-off events. For 233/430 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8290 event pairs, 2 based on Foata normal form. 2/1138 useless extension candidates. Maximal degree in co-relation 1429. Up to 80 conditions per place. [2022-11-21 13:56:14,543 INFO L137 encePairwiseOnDemand]: 502/505 looper letters, 21 selfloop transitions, 2 changer transitions 0/457 dead transitions. [2022-11-21 13:56:14,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 457 transitions, 1008 flow [2022-11-21 13:56:14,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:56:14,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 13:56:14,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1326 transitions. [2022-11-21 13:56:14,549 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8752475247524752 [2022-11-21 13:56:14,549 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1326 transitions. [2022-11-21 13:56:14,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1326 transitions. [2022-11-21 13:56:14,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:56:14,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1326 transitions. [2022-11-21 13:56:14,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 442.0) internal successors, (1326), 3 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:14,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:14,560 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:14,560 INFO L175 Difference]: Start difference. First operand has 451 places, 453 transitions, 954 flow. Second operand 3 states and 1326 transitions. [2022-11-21 13:56:14,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 457 transitions, 1008 flow [2022-11-21 13:56:14,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 457 transitions, 1008 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 13:56:14,572 INFO L231 Difference]: Finished difference. Result has 454 places, 454 transitions, 966 flow [2022-11-21 13:56:14,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=966, PETRI_PLACES=454, PETRI_TRANSITIONS=454} [2022-11-21 13:56:14,577 INFO L288 CegarLoopForPetriNet]: 454 programPoint places, 0 predicate places. [2022-11-21 13:56:14,578 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 454 transitions, 966 flow [2022-11-21 13:56:14,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 435.0) internal successors, (1305), 3 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:14,579 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:56:14,579 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:14,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 13:56:14,580 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-11-21 13:56:14,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:14,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2039611247, now seen corresponding path program 1 times [2022-11-21 13:56:14,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:14,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764225007] [2022-11-21 13:56:14,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:14,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:14,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:14,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764225007] [2022-11-21 13:56:14,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764225007] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:56:14,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086250118] [2022-11-21 13:56:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:14,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:56:14,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:56:14,752 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:56:14,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:56:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:14,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:56:14,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:56:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:56:14,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:56:14,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086250118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:14,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:56:14,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-21 13:56:14,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858354234] [2022-11-21 13:56:14,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:14,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:56:14,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:14,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:56:14,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:56:14,957 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 505 [2022-11-21 13:56:14,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 454 transitions, 966 flow. Second operand has 3 states, 3 states have (on average 435.3333333333333) internal successors, (1306), 3 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:14,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:56:14,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 505 [2022-11-21 13:56:14,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:56:15,591 INFO L130 PetriNetUnfolder]: 58/1256 cut-off events. [2022-11-21 13:56:15,591 INFO L131 PetriNetUnfolder]: For 245/528 co-relation queries the response was YES. [2022-11-21 13:56:15,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1453 conditions, 1256 events. 58/1256 cut-off events. For 245/528 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 8152 event pairs, 4 based on Foata normal form. 8/1150 useless extension candidates. Maximal degree in co-relation 1444. Up to 88 conditions per place. [2022-11-21 13:56:15,651 INFO L137 encePairwiseOnDemand]: 502/505 looper letters, 21 selfloop transitions, 2 changer transitions 0/458 dead transitions. [2022-11-21 13:56:15,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 458 transitions, 1020 flow [2022-11-21 13:56:15,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:56:15,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 13:56:15,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1326 transitions. [2022-11-21 13:56:15,655 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8752475247524752 [2022-11-21 13:56:15,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1326 transitions. [2022-11-21 13:56:15,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1326 transitions. [2022-11-21 13:56:15,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:56:15,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1326 transitions. [2022-11-21 13:56:15,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 442.0) internal successors, (1326), 3 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:15,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:15,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:15,667 INFO L175 Difference]: Start difference. First operand has 454 places, 454 transitions, 966 flow. Second operand 3 states and 1326 transitions. [2022-11-21 13:56:15,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 458 transitions, 1020 flow [2022-11-21 13:56:15,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 458 transitions, 1018 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 13:56:15,679 INFO L231 Difference]: Finished difference. Result has 456 places, 455 transitions, 976 flow [2022-11-21 13:56:15,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=976, PETRI_PLACES=456, PETRI_TRANSITIONS=455} [2022-11-21 13:56:15,681 INFO L288 CegarLoopForPetriNet]: 454 programPoint places, 2 predicate places. [2022-11-21 13:56:15,681 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 455 transitions, 976 flow [2022-11-21 13:56:15,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 435.3333333333333) internal successors, (1306), 3 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:15,683 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:56:15,683 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:15,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:56:15,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf77273-052f-4d17-a07a-ac0a1b0eeb0f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:56:15,891 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr4ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 30 more)] === [2022-11-21 13:56:15,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:15,892 INFO L85 PathProgramCache]: Analyzing trace with hash -518142939, now seen corresponding path program 1 times [2022-11-21 13:56:15,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:15,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188395288] [2022-11-21 13:56:15,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:15,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:16,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:16,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:16,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188395288] [2022-11-21 13:56:16,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188395288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:16,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:16,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:56:16,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311811120] [2022-11-21 13:56:16,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:16,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:56:16,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:16,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:56:16,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:56:16,368 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 505 [2022-11-21 13:56:16,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 455 transitions, 976 flow. Second operand has 6 states, 6 states have (on average 303.5) internal successors, (1821), 6 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:56:16,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:56:16,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 505 [2022-11-21 13:56:16,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand